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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CCD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G
 hartrees
Energy at 0K-225.100598
Energy at 298.15K-225.106594
HF Energy-224.598866
Nuclear repulsion energy164.482545
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3262 3130 8.57      
2 A1 3083 2958 0.03      
3 A1 1692 1624 28.84      
4 A1 1501 1440 12.77      
5 A1 1395 1338 2.69      
6 A1 1261 1210 5.27      
7 A1 1039 997 7.95      
8 A1 953 914 9.30      
9 A2 1168 1120 0.00      
10 A2 813 780 0.00      
11 A2 544 522 0.00      
12 B1 3130 3004 0.29      
13 B1 1065 1022 18.30      
14 B1 792 760 14.58      
15 B1 371 356 48.32      
16 B2 3246 3114 7.40      
17 B2 1745 1674 0.62      
18 B2 1396 1339 12.69      
19 B2 1279 1227 4.34      
20 B2 1085 1041 34.02      
21 B2 973 934 63.98      

Unscaled Zero Point Vibrational Energy (zpe) 15895.6 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 15251.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/6-31G
ABC
0.35727 0.29217 0.16590

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.233
N2 0.000 0.999 0.284
N3 0.000 -0.999 0.284
C4 0.000 0.740 -0.966
C5 0.000 -0.740 -0.966
H6 -0.900 0.000 1.861
H7 0.900 0.000 1.861
H8 0.000 1.491 -1.750
H9 0.000 -1.491 -1.750

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37721.37722.32022.32021.09801.09803.33453.3345
N21.37721.99731.27722.14172.07232.07232.09303.2149
N31.37721.99732.14171.27722.07232.07233.21492.0930
C42.32021.27722.14171.47993.05823.05821.08522.3643
C52.32022.14171.27721.47993.05823.05822.36431.0852
H61.09802.07232.07233.05823.05821.80094.00914.0091
H71.09802.07232.07233.05823.05821.80094.00914.0091
H83.33452.09303.21491.08522.36434.00914.00912.9814
H93.33453.21492.09302.36431.08524.00914.00912.9814

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 121.832 C1 N3 C5 121.832
N2 C1 N3 92.959 N2 C1 H6 113.208
N2 C1 H7 113.208 N2 C4 C5 101.688
N2 C4 H8 124.540 N3 C1 H6 113.208
N3 C1 H7 113.208 N3 C5 C4 101.688
N3 C5 H9 124.540 C4 C5 H9 133.772
C5 C4 H8 133.772 H6 C1 H7 110.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability